Automatic controller for dampers.



PATENTED JUNE 25, 1907. E. P. MILLER. AUTOMATIC CONTROLLER FOR DAM-PERS.

' [mm-100R ZMMT'M APPLICATION FILED FEB.9, 1907.

0 6 f w w A m WW EMIL FERDINAND MILLER, OF CHICAGO, ILLINOIS.

AUTOMATIC CONTROLLER FOR DAMPERS.

Specification of Letters Patent.

Patented June 25, 1907.

Application filed February 9, 1907. Serial No. 356,507.

To all whom it may concern.-

Be it known that I, EMI 'FERDINAND MILLER, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a new and useful. Improvement in'Automatic Controllers for Dampers, of which the following is a complete specification.

This invention relates to improvements in automatic controllers for dampers and more particularly to a controller adapted to open the dampers of a furnace or the like at a predetermined time.

It is ofttimes desirable to provide means whereby the dampers of a furnace may be automatically opened at the end of a given time after the furnace has been filled in order to increase the fire and the object of this invention is to provide a device capable of being set to automatically open the dampers at a given time.

It is also an object of this invention to pro vide a very cheap and simple device capable of being attached to any furnace or other heater or of being supported adjacent thereto by any other preferred means.

The invention consists of the matters hereinafter described in the specification and more fully pointed out and defined in the appended claims.

In the drawings: Figure l is a front elevation of a device embodying my invention. Fig. 2 is a side elevation of the same. Fig. 3 is a fragmentary, perspective view showing the device connected with the dampers of a furnace, and Fig. 4 is a fragmentary view of the controlling lever and alarm key.

As shown in said drawings: a frame, indicated as a whole by A, is provided, which may be attached to the furnace in any preferred manner or supported by any other device in convenient position for making connection with the dampers. Said frame may be constructed of any desired material such as sheet metal, and comprises an apertured top 1, a rear wall 2 and a front wall 3, at the bottom of which is the forwardly directed shelf 4 having end flanges 5 thereon. An alarm clock 6 'of any desired construction is supported on said shelf and is held in place by slotted clamping brackets 7 adjustably engaged on the front wall 3 by means of bolts 8 projecting from said front wall, near the top thereof, and extending through the slots in said brackets and having wing nuts 9 thereon adapted to hold-the brackets in position. Journaled in the front and rear walls of said frame is the drum shaft 10 on which is carried a drum 11 of any preferred size. Secured at one end to said drum and adapted to wind thereon is a chain or cord 12, on the other end of which is a weight 13. A loop or ring 14 is provided in said chain near the weight and is adapted to normally engage over one end of a controlling lever 15 and carry the weight free from the drum. Said lever 15, as shown, is pivoted on a stud shaft 16 carried on a flange 17 extending downwardly from the top 1, and the end thereof opposite from the weight projects through a slot 18 in the front wall of the frame and normally engages beneath the ring of the alarm key 19 as shown more clearly in Fig. 4. l

A cord or other flexible connection 20 is connected at one end to the shaft 10 and at the other end to the damper 21 in the furnace, and a similar connection 22 connects said shaft with the lever 23 of the damper 24 in the pipe 25. Said connections 20 and 22 are each so adjusted that when the weight is suspended on the lever 15 said dampers will be in closed position, and are so connected with said shaft that when the weight falls and causes the drum and shaft to rotate they will be wound on said shaft and thereby open the dampers. The damper lever 23 is provided with a plurality of apertures therein in which to engage the connection 22 so that the damper 24 may be opened any desired distance.

The operation is as follows: The furnace having been fed and the fire allowed to get a sufiicient start to give off the desired heat, the dampers are closed and the alarm of the clock set to go off at the desired time. The drum is then rotated to wind the chain or other support for the weight thereon, which at the same time unwinds the connections 20 and 22, which are kept taut by the weight of the damper 21 and the lever 23. The ring is then hung over the adjacent end of the lever 15. The other end of said lever is engaged beneath the ring of the alarm key so that the weight 13 is normally supported ver. As soon however as the alarm starts to operate its key is revolved, thereby releasing the lever and permitting the weight to fall. The fall of the weight causes the drum and consequently the shaft 10 to revolve thereby winding up the flexible connections 20 and 22 and opening the dampers.

It is obvious that the device as constructed by said le- IIO is equally capable of being used for many other purposes than operating dampers, as for instance, opening ventilators or doors of any kind.

I claim as my invention:

1. In a device of the class described the combination with a frame of an alarm clock supported thereon, a shaft, means connecting said shaft with the dampers of a furnace, a-lever pivoted on said frame andcontrolled by said clock and means supported on said lever adapted to rotate said shaft and open the dampers'at a predetermined time.

2. In a device of the class described the combination with a frame of an alarm clock supported thereon, a rotatable shaft in said frame, a weight adapted to rotate said shaft, alever pivoted on the frame and engaged at one end beneath the alarm key of the clock and adapted at the other end to normally support said weight, and flexible cords adapted to be wound on said shaft when the alarm goes off.

3. In a device of the class described the combination with a frame of an alarm clock supported thereon, a shaft supported in said frame,=a drum thereon, a flexible connection on said drum, a weight connected therewith,

a lever pivoted on the frame and normally engaged at one end beneath the alarm key, a loop in said connection adapted to normally support the weight on said lever and flexible connections adapted to wind on said shaft I when the alarm goes off and releases the weight.

4. In a device of the class described the combination with a frame of an alarm clock having a key on the back thereof, a lever adapted to be engaged at one end beneath said key when the alarm is wound, a weight I normally supported on the opposite end of said lever, a shaft, damper cords connected therewith and means connecting said weight and shaft adapted to wind the cords on said shaft when the alarm goes off.

5. Thecombination with a frame, of an alarm clock supported thereon, adrum shaft journaled inthe frame, a drum thereon, a weight, a weight cord connecting said drum and weight and adapted to be wound on said drum and rotate the same, a lever pivoted on the frame and adapted to normally support said weight on one end, an alarm key on said clock adapted to normally engage said lever in position to support the weight and dampercords adapted to be wound on said shaft when the alarm goes off and releases the weight.

In-testimony whereof, I have signed my name to this specification in the presence-of two subscribing witnesses.

EMIL FERDINAND MILLER.

Witnesses:

A. PRAZSKY, JAMES BLACK. 

